Feynman-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">x</mml:mi></mml:math>and Transverse Momentum Dependence of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">D</mml:mi></mml:math>Meson Production in 250 GeV<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">π</mml:mi></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">K</mml:mi></mml:math>, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">p</mml:mi></mml:math>Interactions with Nuclei

199654 citationsJournal Article

Authors

G. A. Alves · Centro Brasileiro de Pesquisas Físicas

S. Amato · Centro Brasileiro de Pesquisas Físicas

J. C. Anjos · Centro Brasileiro de Pesquisas Físicas

J. A. Appel · Fermi National Accelerator Laboratory

J. Astorga · Tufts University

S. B. Bracker · University of Toronto

L. Cremaldi

Abstract

We measure the differential cross sections with respect to Feynman $x$ ( ${x}_{F}$) and transverse momentum ( ${p}_{T}$) for $\ensuremath{\pi}$, $K$, and $p$-induced charm meson production using fully reconstructed ${D}^{+}$, ${D}^{0}$, and ${D}_{s}$ decays. The shapes of these cross sections are compared to the theoretical predictions for charm quark production of next-to-leading order perturbative QCD using modern parametrizations of the pion and nucleon parton distributions. We observe the differences expected in production induced by projectiles with different gluon distributions, harder distributions being indicated for mesons than for protons.

Topics & Keywords

Particle physics theoretical and experimental studies High-Energy Particle Collisions Research Quantum Chromodynamics and Particle Interactions

Publication Details

Published in: Physical Review Letters

Volume 77, Issue 12, pp. 2392-2395

DOI: 10.1103/physrevlett.77.2392

Field-Weighted Citation Impact: 7.83

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Publication Details